Weather on September 20
Ventura, CA
55 Years of Data
Avg High
84°F
Avg Low
51°F
Warmest
1984
79°F avg
Coldest
2007
56°F avg
About This Date
September 20th in Ventura, CA typically brings warm fall weather, with average highs around 84°F and lows near 51°F — a 33°F daily swing. Over 55 years of records, the warmest September 20th was in 1984 (79°F average), while the coldest was 2007 (56°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 2% of September 20th dates historically. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for September 20th in Ventura, CA? Stay hydrated and seek shade during peak afternoon hours.
Cooling Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 83° | 56° | 69° | — | — |
| 2024 | 75° | 46° | 61° | — | — |
| 2023 | 79° | 51° | 65° | — | — |
| 2022 | 80° | 52° | 66° | — | — |
| 2021 | 83° | 46° | 64° | — | — |
| 2020 | 88° | 47° | 67° | — | — |
| 2019 | 78° | 44° | 61° | — | — |
| 2018 | 88° | 43° | 65° | — | — |
| 2017 | 77° | 49° | 63° | — | — |
| 2016 | 99° | 58° | 78° | — | — |
| 2015 | 98° | 53° | 76° | — | — |
| 2014 | 83° | 54° | 68° | — | — |
| 2013 | 76° | 57° | 66° | — | — |
| 2012 | 95° | 61° | 78° | — | — |
| 2011 | 84° | 54° | 69° | — | — |
| 2010 | 81° | 52° | 66° | — | — |
| 2009 | 82° | 55° | 69° | — | — |
| 2008 | 77° | 52° | 64° | — | — |
| 2007coldest | 64° | 48° | 56° | — | — |
| 2006 | 75° | 46° | 61° | — | — |
| 2005 | 82° | 55° | 69° | — | — |
| 2004 | 75° | 48° | 62° | — | — |
| 2003 | 91° | 52° | 71° | — | — |
| 2002 | 88° | 52° | 70° | — | — |
| 2001 | 77° | 52° | 64° | — | — |
| 2000 | 77° | 57° | 67° | — | — |
| 1999 | 76° | 44° | 60° | — | — |
| 1998 | 70° | 57° | 63° | — | — |
| 1997 | 84° | 48° | 66° | — | — |
| 1996 | 88° | 56° | 72° | — | — |
| 1995 | 90° | 55° | 72° | — | — |
| 1994 | 84° | 50° | 67° | — | — |
| 1993 | 72° | 49° | 60° | — | — |
| 1992 | 93° | 50° | 72° | — | — |
| 1991 | 92° | 55° | 73° | — | — |
| 1990 | 76° | 50° | 63° | — | — |
| 1989 | 87° | — | — | — | — |
| 1988 | 88° | 47° | 67° | 0.2" | — |
| 1987 | 94° | 49° | 71° | — | — |
| 1986 | 74° | 44° | 59° | — | — |
| 1985 | 85° | 43° | 64° | — | — |
| 1984warmest | 94° | 64° | 79° | — | — |
| 1983 | 87° | 62° | 75° | — | — |
| 1982 | 87° | 50° | 69° | — | — |
| 1981 | 92° | 52° | 72° | — | — |
| 1980 | 77° | 41° | 59° | — | — |
| 1979 | 92° | — | — | — | — |
| 1978 | 90° | 46° | 68° | — | — |
| 1977 | 80° | 52° | 66° | — | — |
| 1976 | 75° | 60° | 68° | — | — |
| 1975 | 90° | 53° | 71° | — | — |
| 1974 | 90° | 50° | 70° | — | — |
| 1973 | 77° | 50° | 64° | — | — |
| 1972 | 97° | 50° | 73° | — | — |
| 1971 | 85° | 47° | 66° | — | — |
55 years of data from OJAI CALIFORNIA